Clausebase
ClauseBase is a Belgium-based SaaS company that provides AI-powered legal drafting and document automation tools, delivered as add-ins inside Microsoft Word and Outlook, to law firms and in-house legal teams. Acquired by LawVu in December 2025 and rebranded as LawVu Draft.
- Company typePrivate
- Founded2018
- HeadquartersLeuven, Belgium
- Headcount11–50
- GTM typeB2B
- OfferingSoftware
What Clausebase does
ClauseBase is a Belgium-based B2B SaaS company, founded in 2018 in Leuven, that builds legal drafting and document automation software for lawyers and in-house legal teams. Its product portfolio centers on two offerings: ClauseBuddy, an AI-powered drafting toolbox delivered as an add-in inside Microsoft Word and Outlook that provides first-draft generation, AI-assisted reviewing and proofreading, AI-assisted drafting, document analysis, a clause finder, and document comparison; and Clause9, advanced legal document automation software with clause-based drafting, intelligent questionnaires, and deep grammatical support across 27+ languages including Arabic, Chinese, Japanese, Russian, and Turkish. The platform is differentiated by deep native integration into the Microsoft Office environment, customer-curated clause libraries with metadata and cross-referencing, ISO 27001 certification, European data hosting, and a privacy posture in which no customer data is used to train or finetune LLMs; ClauseBase relies on Microsoft LLMs accessed via prompt engineering.
The business is sales-led and subscription-based, with pricing not publicly disclosed, annual billing cadence, and a demo-driven buying motion targeting decision-makers in legal teams. The customer base spans law firms (CMS, Deloitte Legal, Addleshaw Goddard, Loyens & Loef, Ellex) and corporate in-house functions (AES Corporation, SDWorx, Axel Springer, Daikin), with self-reported presence on every continent except Antarctica. The company was fully bootstrapped and profitable from inception, employed 11–50 people on a remote-first basis with offices in Leuven and Antwerp, and was acquired by New Zealand-headquartered legal technology vendor LawVu in December 2025 for $28 million, at which point the product was rebranded as LawVu Draft and LawVu launched LawVu Lens, an AI-powered contract analysis tool, as part of the combined platform strategy.
Clausebase firmographics
Firmographics- Name
- Clausebase
- Legal name
- ClauseBase BV
- Website
- https://clausebase.com
- Company type
- Private
- Founded year
- 2018
- Operating status
- Acquired
- Headcount range
- 11–50 employees
- Short description
- ClauseBase is a Belgium-based SaaS company that provides AI-powered legal drafting and document automation tools, delivered as add-ins inside Microsoft Word and Outlook, to law firms and in-house legal teams. Acquired by LawVu in December 2025 and rebranded as LawVu Draft.
- Ownership category
- akta.pro rank
Clausebase industry classification
Industry- Product category
- Legal Tech Software
- NAICS
- Software Publishers (5132)
- SIC
- Services-Prepackaged Software (7372)
- akta.pro primary industry
- Responsible AI, Security & Privacy Platforms (Safety, Guardrails, PII) (HDAEANAG)
- akta.pro secondary industry
- Ethical Data Sourcing, Consent & Data Provenance (HDAAAMAI)
Keywords
Where Clausebase is headquartered
LocationHeadquarters
- HQ city
- Leuven
- HQ country
- Belgium
- HQ region
- Europe
Offices2 records
Markets served
Clausebase business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Technology or R&D, Personnel, Marketing or Sales, Infrastructure, Operations
Revenue model
- SaaS Subscription: B2B SaaS subscription model for legal drafting software. Fully bootstrapped and profitable company. Pricing is subscription-based with plans for ClauseBuddy and Clause9 products.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Subscription | Annual | Pricing details not publicly available |
Go-to-market motion1 record
Distribution channels3 records
Marketing channels7 records
Clausebase product offering
Product offeringCore offering
ClauseBase provides AI-powered legal drafting and document automation software through two products: ClauseBuddy, an AI-powered drafting toolbox that lives inside Microsoft Word and Outlook (offering first draft generation, AI-assisted reviewing/proofreading, AI-assisted drafting, clause finder, and document comparison); and Clause9, advanced legal document automation software with clause-based drafting, intelligent questionnaires, and deep grammatical support for 27+ languages. The platform enables legal teams to draft, review, and manage contracts with AI assistance while leveraging their firm's clause libraries.
Product overview
ClauseBase offers a comprehensive legal drafting and automation platform comprising two primary products: ClauseBuddy (an AI-powered add-in for Microsoft Word and Outlook providing drafting, reviewing, and clause management tools) and Clause9 (advanced document automation software for complex clause-based template generation). The platform helps legal teams draft, refine, and review contracts with AI assistance. In December 2025, ClauseBase was acquired by LawVu and rebranded as LawVu Draft, with LawVu Lens added as an AI-powered contract analysis tool.
Differentiator
Problem solved
Functional benefit
Brands
- ClauseBuddy: AI-powered drafting toolbox that lives inside MS Word and Outlook. Offers features including first draft generation, AI-assisted reviewing & proofreading, AI-assisted drafting, AI document analysis, and clause finder.
- Clause9
Products and services
- ClauseBuddy AI-powered drafting toolbox that integrates as an add-in within Microsoft Word and Outlook, offering first draft generation, AI-assisted reviewing and proofreading, AI-assisted drafting, AI document analysis, clause finder, and document comparison. Designed for legal teams seeking efficient drafting tools with AI capabilities.
- Clause9 Advanced legal document automation software positioned as the most powerful on the market, offering clause-based drafting with intelligent questionnaires and advanced template automation for complex document generation. Supports multiple languages with deep grammatical handling including singular/plural, gender and grammatical case variations.
Quantifiable outcome
- Draft tailored documents in minutes
- +3 more outcomes
Companies that use Clausebase
Customer profileNamed customers10 records
Segments6 records
Ideal customer profiles2 records
Clausebase technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Integration3 records
AI capability5 records
Feature6 records
Clausebase partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- LawVucoreClauseBase and LawVu first formed a commercial partnership in early 2025 and began building a deep product integration. By end of 2025, LawVu acquired ClauseBase for $28 million, rebranding it as LawVu Draft. The acquisition enables accelerated product development and deeper platform integration, combining ClauseBase's drafting technology with LawVu's workflow software for legal teams.
Scale indicators4 records
Recent moves6 records
Expansion highlights5 records
Clausebase competitors and assessment
Company assessmentDirect peers
- Spellbook: Spellbook is an AI-powered legal drafting and review assistant that lives inside Microsoft Word, targeting lawyers drafting contracts. It is the closest direct competitor to ClauseBase's ClauseBuddy, with a similar prompt-driven drafting and review value proposition for transactional lawyers.
- Harvey: Harvey is an AI platform purpose-built for law firms and in-house legal teams, offering drafting, summarization, and review across contracts and matters. It competes with ClauseBase for the same enterprise legal AI budget and brand within Am Law firms and Fortune 500 legal departments.
- LawVu: LawVu is the strategic acquirer of ClauseBase and now offers an integrated legal workspace for in-house teams — combining matter management, contract lifecycle, and (post-deal) ClauseBase's drafting as LawVu Draft. As a peer/comparator, it shows where ClauseBase's product sits inside a broader in-house legal platform motion.
- Ironclad: Ironclad is a contract lifecycle management (CLM) platform with AI-driven contract review and workflow for in-house legal teams. Its AI Assist and dynamic workflow capabilities overlap with ClauseBase's clause library, document automation, and review automation, especially for sales contracts and commercial legal workflows.
- Luminance: Luminance applies AI to contract review, drafting, and analysis — covering NDA generation, clause comparison, and negotiation tools. It directly overlaps with ClauseBase's drafting and review use cases for in-house counsel, particularly in cross-border contexts.
- Evisort: Evisort is an AI contract intelligence platform for analyzing, reviewing, and managing contracts. Its AI-first review tools (including the now-shipping Evisort Draft) compete with ClauseBuddy's reviewing and proofreading capabilities for in-house legal and procurement teams.
Broad incumbents
- Thomson Reuters CoCounsel: CoCounsel is Thomson Reuters' AI legal assistant for drafting, review, and research, bundled into the broader Practical Law, Westlaw, and Document Intelligence stack. As a broad incumbent, it competes for the same legal AI budget as ClauseBase, with the advantage of an incumbent distribution footprint inside law firms and corporate legal departments.
- LexisNexis Lexis+ AI: Lexis+ AI is LexisNexis' generative AI assistant combining legal research, drafting, and document analysis. It is an incumbent platform with deep penetration among law-firm customers that competes with ClauseBase's Word-native drafting and review workflow.
- Kira Systems (Litera): Kira Systems, owned by Litera, offers AI-driven contract review and analysis, while Litera's broader portfolio covers drafting, proofreading, and deal management. Combined, they overlap with ClauseBase's clause finding, document comparison, and proofreading propositions inside an incumbent legal tech stack.
- Onit (Epona / Contract Lifecycle): Onit (now part of Apryse) offers enterprise contract lifecycle management, AI review (Epona), and legal workflow software. Their CLM and AI review capabilities compete with ClauseBase's contract drafting automation use cases for in-house legal teams.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights7 records
Customer concentration
Clausebase social profiles
Digital presenceClausebase compliance and trust
Trust signalCompliance1 record
Clausebase financial estimates
Financial estimateRevenue estimate
Valuation estimate
Clausebase leadership team
Management profileNumber of profiles
Profiles2 records
Clausebase funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Clausebase M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Clausebase
What does Clausebase do?
ClauseBase provides AI-powered legal drafting and document automation software through two products: ClauseBuddy, an AI-powered drafting toolbox that lives inside Microsoft Word and Outlook (offering first draft generation, AI-assisted reviewing/proofreading, AI-assisted drafting, clause finder, and document comparison); and Clause9, advanced legal document automation software with clause-based drafting, intelligent questionnaires, and deep grammatical support for 27+ languages. The platform enables legal teams to draft, review, and manage contracts with AI assistance while leveraging their firm's clause libraries.
Is Clausebase a public or private company?
Clausebase is a private company. It is classified as corporate owned and is currently acquired.
When was Clausebase founded?
Clausebase was founded in 2018. It employs 11 to 50 people.
Where is Clausebase based?
Clausebase is headquartered in Leuven, Belgium, in the Europe region.
How does Clausebase make money?
One revenue line is on record: saaS Subscription.
Who are Clausebase's main competitors?
Direct peers on record are Spellbook, Harvey, LawVu, Ironclad, Luminance and Evisort. Broad incumbents are Thomson Reuters CoCounsel, LexisNexis Lexis+ AI, Kira Systems (Litera) and Onit (Epona / Contract Lifecycle).
Does Clausebase have an API?
Yes. ClauseBase offers API access for customers, including an optional API key that allows third-party servers to send requests to ClauseBase's server on the basis of a user's account. Specific API types (REST, GraphQL, etc.), rate limits, versioning, and documentation URLs are not detailed in available sources.
What industry is Clausebase in?
Clausebase's product category is Legal Tech Software. Its primary akta.pro industry code is HDAEANAG, Responsible AI, Security & Privacy Platforms (Safety, Guardrails, PII), with a secondary code of HDAAAMAI, Ethical Data Sourcing, Consent & Data Provenance. Its NAICS code is 5132 and its SIC code is 7372.